12777680

素因数分解:

$2^4\times 5^1\times {\mathrm{159721}}^1$

素因数の和:159734

約数の個数: 20

約数和(自身を含む): 29708292

約数和(自身を除く): 16930612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 159721, 319442, 638884, 798605, 1277768, 1597210, 2555536, 3194420, 6388840, 12777680]

約数ペア:

[(1, 12777680), (2, 6388840), (4, 3194420), (5, 2555536), (8, 1597210), (10, 1277768), (16, 798605), (20, 638884), (40, 319442), (80, 159721)]